Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marissa Jane Versalle, DO

Internal Medicine Physician in Lake Forest, IL · enumerated 2014.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669891107

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Registry record

Entity type Individual (Type 1)

Name Dr. Marissa Jane Versalle

Credential DO

Sex Female

Practice address 990 S Waukegan Rd Fl 2, Lake Forest, IL, 60045

Phone (847) 861-0025

Fax (847) 861-0026

Enumeration date Apr 14, 2014

Last updated in NPPES Jan 12, 2026

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 036.146901 (IL) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 34.012714 (OH) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036146901 (IL) Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Marissa Versalle?

Marissa Versalle is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-12.